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B- Unit 2 Lesson 4

Cycling of Matter and Energy Flow

TermDefinition
biomass the amount of organisms in a given area or volume in an ecosystem
gross primary productivity (GPP) the amount of organic, carbon-based material that is produced by photosynthesis
net primary productivity (NPP) the measure of the amount of organic material produced minus the amount of organic material used during life processes such as respiration
photosynthesis process where green plants and other organisms convert light energy into chemical energy using carbon dioxide and water
primary consumers an organism that feeds on producers such plants
primary productivity the rate at which plants and other photosynthetic organisms produce organic compounds
producers an organism that makes its own food
trophic level the level in which organisms are found in the food chain
Created by: atrang
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